In recent years, the automobile industry is facing more challenge than ever due to rapid model change requirements and demand fluctuations. Traditional fixed-type production systems are less capable in coping with the rapid change, while flexible production systems can better meet the requirement of low-volume production with model variations. Flexible machines integrated with model-mixed assembly lines form flexible assembly systems (FASs). In this paper, Colored Timed Petri Net (CTPN) is used to model a highly model-mixed automobile assembly system. Based on this CTPN model, a real-time simulator was developed along with different dispatching rules. Besides, the algorithm of balanced budget work standard (BWS) for a small batch production is developed for adjusting the loading balance of the operators in the highly model-mixed assembly lines. The simulator can be used as an effective tool for developing scheduling strategies.

Issue Section:
Research Papers
Topics:
Manufacturing, Modeling, Assembly lines, Flexible manufacturing systems, Algorithms, Automobiles, Automotive industry, Fluctuations (Physics), Machinery, Manufacturing systems
1.
Bauer, A., Bowden, R., Browse, J., Duggan, J., and Lyons, G., Shop Floor Control System—from Design to Implementation, London, Chapman & Hall, 1991.
2.
Desrochers, A. A., and Al-Jaar, R.Y., Applications of Petri Nets in Manufacturing Systems—Modeling, Control and Performance Analysis, New York, IEEE Press Marketing, 1995.
3.
G2 Reference Manual Version 4.0, Gensym, 1995.
4.
Huang
H. P.
, and
Chang
P. C.
, “
Specification, Modeling and Control of a Flexible Manufacturing Cell
,”
Int. J. Production Research
, Vol.
30
, No.
11
, pp.
2515
–
2543
,
1992
.
5.
Huang
H. P.
, and
Tseng
Y. H.
, “
Modeling and Graphic Simulator for Integrated Manufacturing Systems
,”
Intelligent Automation and Soft Computing
, Vol.
1
, pp.
183
–
186
,
1994
.
6.
Huber, P., Jensen, K., and Shapiro, R.M., “Hierarchies in Coloured Petri Nets,” Advanced in Petri Nets 1990, Lecture Notes in Computer Science, Springer-Verlag, pp. 313–341, 1990.
7.
Kuo, C.H., “Application of Reliability and Equipment Maintenance to Flexible Manufacturing Systems,” Master Thesis, Department of Mechanical Engineering, National Taiwan University, 1995.
8.
Kuo, C.H., Huang, H.P., Wei, K.C., and Tang, S.S.H., “Dispatching and Simulation for Highly Model-Mixed Automotive Plants,” Proc. Int. Conference on Automation Technology, Taiwan, Vol. 1, pp. 423–430, 1996.
9.
Kuo, C.H., and Huang, H.P., “Colored Timed Petri Net Based Statistical Process Control and Fault Diagnosis to Flexible Manufacturing Systems,” IEEE Int. Conf. on Robotics and Automation, New Mexico, Vol. 4, pp. 2741–2746, April, 1997.
10.
Kuo, C.H., Huang, H.P., Wei, K.C., and Tang, S.S.H., “The Development of PC-Based Highly Model-Mixed Engine Dispatching Systems,” IEEE 6th Int. Conference on Emerging Technology and Factory Automation Proceedings, Los Angeles, California, pp. 49–54, 1997.
11.
Lu, S.S., and Huang, H.P., “Modularization and Properties of Flexible Manufacturing Systems,” Advances in Factories of the Future, CIM and Robotics, M. Cotsaftis and F. Vernadat, eds., Amsterdam, Elsevier, pp. 289–298, 1993.
12.
Molloy
M. K.
, “
Performance Analysis Using Stochastic Petri Nets
,”
IEEE Trans. On Computers
, Vol.
C-31
, pp.
913
–
917
,
1982
.
13.
Peterson, J.L., Petri Net Theory and The Modeling of Systems, Englewood Cliffs, N.J., Prentice-Hall Inc., 1981.
14.
Tang
H. P.
,
Ho
J. K. L.
, and
Tam
H. Y.
, “
Reconfigurable Data-Modules for the Reconfiguration of a Flexible Assembly System
,”
Intelligent Automation and Soft Computing
, Vol.
1
, pp.
231
–
236
,
1994
.
15.
Tsai, C.J., and Fu, L.C., “Modular Approach for Petri-Nets Modeling of Flexible Manufacturing Systems Adaptable to Various Task-Flow Requirement,” Proc. IEEE Int. Conf. on Robotics and Automation, France, pp. 1043–1048, 1992.
16.
Tseng, Y.H., “Modularized Modeling and Simulation of a Flexible Manufacturing System,” Master Thesis, Department of Mechanical Engineering, National Taiwan University, 1993.
17.
Yeh, M.C., “Development of Shop Floor Control System for flexible Manufacturing Systems,” Master Thesis, Department of Mechanical Engineering, National Taiwan University, 1994.
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